Samuel b



VANCE & SMITH.

Clock-Case.

No. 79.521. v Patented June 30, 1256 8.

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SAMUEL B. VANCE AND EDGAR M. SMITH, OF NEW YORK, N. Y., ASSIGNORS TOMITCHELL, VANCE, AND COMPANY, OF SAME PLACE.

Lam Patent No. 79,521, dated June so, 1868.

IMPROVED COMPOSITION CLOCK-CASE.

-T0 ALLWH 'M IT' MAY CONCERN:

Be it known that we, SAMUEL B. H. Vance and EDGAR M. SMITH, of the city,county, and State of New York, have invented certain new and usefulImprovements in the Manufacture of Composition Clock-Cases, in imitationof marble or other natural stone; and we do hereby declare the followingto be a full, clear, and exact description of the same, referencebeing'had to the accompanying drawings, making a part of thisspecification, in vvhichv Figure 1 represents a perspective view of aclock-ease made after my plan, and

Figure-2 represents a perspective view-of a grooved, rabbeted, orrecessed metallic ring, cemented in the case, for receiving and holdingthe clock-works. i

This invention relates, first, to a clock-case made of a composition ofmineralmatter, which may be variously colored, and mixed and moulded ina plastic state, so as to represent marbles of varied colors.

And, secondly, our invention consists in moulding or cementing into acomposition clock-case a grooved,

rabbeted, or recessed metalring, for receiving, holding, and uniting theclock-works thereto.

To enable others skilled in the art to makeand use our invention, wewill proceed to describe the same with reference to the drawings.

First, we take a cement, in powder, known as .Reevess cement, which, byanalysis, is composed of the following ingredients and proportions, viz

Sulphate of lime, (plaster of Paris,) 93.84 parts. Alumina, g 1.09Carbon, lump-black) 't 1.97 Potassa and silicic acid, 1.81 Hygroscopicwater, 0.55 .Waiterin chemioalcombinntion, 0.74

To produce artificial stone from this cement, of varied colors, we usemore or less coloringmntter, without varying the other ingredientsmaterially, if at all, as the proportions have been ascertained to be asnear correct as ossible.

- p This cement or these ingredients are mixed into a paste or mortar byadding to them a very dilute solution of alum, and then it is moulded tothe desired shape, form, or ornamentation desired, rubbed smooth, andfinished in imitation of marble.

The diii'erent parts of the clock-case may be madein separate pieces,and, of separate colors, and afterwards grouped and cemented togetherinto one whole.

A, in fig. 2, is a' inetallic ring, grooved, rabbeted, and recessed, as.at a b 0, so as to receive and hold the clock-works, which are set in-aframe, said frame fitting into the grooves, rabbets, or recesses of saidring; and upon this ring there is-a guide, at, the top of which ishollowed out, to receive a similarly-shaped'piece attached 'to theclock-work frame, so that, by placing this part of the frame upontheguide or hearing cl, in pushing in the frame, it will find its seat andbearing in the metallic ring, and then, by means of screws, is firmlyattached thereto. This metallicring A, having been moulded into orcemented to the composition clock-case, gives the clock-work a very firmand secure position in the case. The dial-frame B, on the face of theclock-frame, is

secured to the metallic ring A by screws, and the door that covers thedial with its glass, or the sash-frame, as it is ter'med, is hinged tothe dial-frame B, so that, in fact, this embedded metallic ring A holdsall the parts firmly to the composition frame, which it would bediflieult 0 do'byiuniting .them to the clock-case after it was made, thematerial, in its hard condition, not being suitable to fasten theseparts to; but, by the use of the metal ring A, made as mentioned, andmoulded or cemented to the clock-case, the clock-works may be readilyput in place, or removed for repairs, and again slipped back into theirseat, andscrewed fast, and the sash and dial-frame also convenientlyattached or detached.

Having thus fully described our invention, what we claim is- 1. Aclock-frame, made of the composition herein described, made plastic bydiluted alum, and colored and moulded into shape or form, as hereindescribed and represented.

2. We also claim, in combination with a composition clock-case, made inimitation of marble, a metallic ring, embedded or cemented thereto,whichring serres as a seat for the clock-gear and other attachable orremovable parts, as described and represented. A

- SAML B. H. VANCE,

EDGAR M. SMITH. -Witnesses:

EDWARD RAYSEL,

S. Las'sn. I

